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| 2/18/2009 5:25 PM | |
Joined: 12/18/2008 Last visit: 6/18/2022 Posts: 12 Rating:
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how we will align the new encoder in 1FT610 series motor if encoder becomes faulty and it has to be replaced by new one. |
| 2/19/2009 9:14 PM | |
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Posts: 271 Rating:
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Hello Mint, Turn the drive power off. After the DC bus is discharged fully, disconnect terminal 48/9 onthe InfeedMoudle and disconnect the motorpower cable from the power section. Connect upthree 10kOhm resistors in a wye configuration to the motor power terminals. This will create a neutral point for measuring the U to N backEMF voltage signals. To viewthe zero pulse from the encoder, use the DAC1 output on the 840-D. Set the DAC configuration for "Zero mark signal motor meas. system" with ashift factor of 17. The DAC output has a +2.5V offset (i.e., +2.5V corresponds to zero).Channel A is connected toDAC output 1 and ChannelB is the backEMF U to N. Set the scope trigger on Channel A (e.g., time base = 5ms/div, CHA = 1volt/div and CHB = 10volt/div). Note: A finer view of the zero crossing is made by changing the voltage scale of Channel B to 1volt/div. Rotate the motor manually in the clockwise direction and observe the scope trace. The "0" pulse must occur at the positive going "0" crossing of the U to N backEMF. If not, the encoder position must be adjusted by rotating the encoder slightly. Hope this helps... AttachmentEncoder Alignment_611-D.zip (1441 Downloads) |
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| 4/25/2023 1:58 PM | |
Joined: 3/2/2007 Last visit: 11/7/2024 Posts: 944 Rating:
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very useful information's . . . |
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... thank you ... |
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